Scientific Online Resource System

Bulgarian Review of Ophthalmology

Innovative Technologies To Improve Low Vision

I. Pitakova


According to WHO data from 2015 – globally 36 million people are blind, 253 million are visually impaired, 55% of whom are women. The creator of modern optical aids for the visually impaired is the famous American scientist William Feinbloom. The special devices to support the low vision are mainly divided into non-optical, optical and electronic. Of interest are the special magnifying devices for surgical implantation in the anterior segment of the eye – mini-telescopes. They apply the concept of enlarging the image on the retina, using a combination of minus and plus lenses as a magnifying glass. A new generation lens “Eyemax mono” is also a technological achievement. It is intended for monocular or binocular implantation in patients with AMD. An innovation is the use of a contact lens for visual rehabilitation – Contact Telescopic Lens. It is a solid gas-permeable scleral contact lens. The Argus II prosthesis is the first epiretinal prosthesis that restores vision in patients with Retinitis Pigmentosa. „Artificial intelligence“ glasses are too expensive. OrCam MyEye can read all printed texts, in addition, the device detects and recognizes objects and people, and recently has software in Bulgarian. In Bulgaria there is no integrated approach to the problem of the visually impaired. Most people with severe visual impairments, unlike complete blindness, have residual useful vision.


blindness, magnifying devices, mini-telescope, Argus II prosthesis, OrCam MyEye

Full Text


Chakravarthy U, Biundo E, Saka RO et al. The Economic Impact of Blindness in Europe. Ophthalmic Epidemiol, 2017;24(4):239-47.

Pezzullo L, Streatfeild J, Simkiss P, Shickle D. The economic impact of sight loss and blindness in the UK adult population. BMC Health Serv Res, 2018;18(1):63.

Chakrabarti M, Chakrabarti A. IOL Selection for patients with age-related macular degeneration. Semantic Scholar, 2015.

Hudson HL, Lane SS, Heier JS et al. Implantable Miniature Telescope for the Treatment of Visual Acuity Loss Resulting from End-Stage Age-Related Macular Degeneration: 1-Year Results. Ophthalmol, 2006;113(11):1987-2001.

Waisbren EC, Brown MM. Implantable telescope for end-stage age-related macular degeneration: Long-term visual acuity and safety outcomes - Commentary, Evidence-Based Ophthalmol, 2009, 10, 135-7.

Novis C, Lipshitz I. Magnification for age-related macular degeneration patients having cataract surgery. J Cataract Refract Surg, 2012, 38, 1706.

Agarwal A, Lipshitz I, Jacob S et al. Mirror telescopic intraocular lens for age-related macular degeneration. Design and preliminary clinical results of the Lipshitz macular implant. J Cataract Refract Surg, 2008;34(1):87-94.

Scharioth GB. New add-on intraocular lens for patients with age-related macular degeneration. J Cataract Refract Surg, 2015;41(8):1559-63.

Nekolova J, Rozsival P, Sin M et al. Scharioth Macula Lens: A new intraocular implant for low-vision patients with stabilized maculopathy- first experience. Biomed Pap,. 2017 Jun 14;161(2):206-9. Eyemax mono IOL.

Lavinsky J, Tomasetto G SE 2001. Use of a contact lens telescopic system in low vision patients. Int J Rehabil Res, 2001 Dec;24(4):337-40.

Gerstman DR, Levene JR. Galilean telescopic sys-tem for the partially sighted New application of the Fresnel lens. Brit J Ophthal, 58:76.

Ong J, da Cruz L. The bionic eye. Clinic Experim Ophthalmol, 2012, 40(1), 6-17.

Кереков Н. Трансплантация на бионично око. Български oфталмологичен преглед, 2012, 40.

Stronks HC, Dagnelie G. The functional performance of the Argus II retinal prosthesis. Expert Rev Med Devices, 2014, 11, 23-30.

Luo YHL, da Cruz L. The Argus® II Retinal Pros-thesis System. Vol. 50, Progress in Retinal and Eye Research, 2016, 89-107.

da Cruz L, Dorn JD, Humayun MS, Dagnelie G, Handa J, Barale PO, et al. Five-Year Safety and Performance Results from the Argus II Retinal Pros-thesis System Clinical Trial. Ophthalmol, 2016 Oct;123(10):2248-54.

Holan V, Trosan P, Cejka C et al. A Comparative Study of the Therapeutic Potential of Mesenchymal Stem Cells and Limbal Epithelial Stem Cells for Ocular Surface Reconstruction. Stem Cells Transl Med, 2015 Sep;4(9):1052-63.

Cislo-Pakuluk A, Marycz K. A Promising Tool in Retina Regeneration: Current Perspectives and Challenges When Using Mesenchymal Progenitor Stem Cells in Veterinary and Human Ophthalmological Applications. Stem Cell Reviews and Re-ports, 2017, 13, 598-602.





Font Size

Article Tools
Email this article (Login required)
About The Author

I. Pitakova
Specialized Eye Clinic “Sv. Nikolay” – Varna